<!DOCTYPE HTML>
<style>
body { margin: 0px; }
div.box { padding: 40px; height: 160px; }
#limegreen { background-color: limegreen; }
iframe { margin: 0px; border: 0px; width: 160px; height: 160px; }
</style>
<div class="box" id="limegreen"><iframe src='gesture-tap-mouse-events-between-frames-iframe3.html' id='frameC'></iframe></div>